Gurobi 5.0.1 (linux64) logging started Wed Apr 24 05:58:19 2013 Optimize a model with 81990 rows, 81090 columns and 324090 nonzeros Presolve removed 3318 rows and 0 columns Presolve time: 0.57s Presolved: 78672 rows, 81090 columns, 317454 nonzeros Variable types: 81000 continuous, 90 integer (90 binary) Root relaxation: objective 1.119755e+05, 18379 iterations, 4.80 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 111975.477 0 4 - 111975.477 - - 5s H 0 0 116017.00000 111975.477 3.48% - 5s 0 0 111976.938 0 5 116017.000 111976.938 3.48% - 6s 0 0 111977.148 0 5 116017.000 111977.148 3.48% - 7s H 0 0 113244.40541 111977.148 1.12% - 9s 0 0 111977.148 0 4 113244.405 111977.148 1.12% - 14s 0 0 111977.171 0 5 113244.405 111977.171 1.12% - 15s 0 0 111977.171 0 5 113244.405 111977.171 1.12% - 15s 0 2 111983.634 0 5 113244.405 111983.634 1.11% - 17s H 7 7 112378.87195 112157.466 0.20% 153 18s H 8 6 112373.50299 112157.466 0.19% 170 18s * 12 7 8 112362.00000 112157.466 0.18% 115 18s * 18 1 7 112284.00000 112284.000 0.0% 103 19s Cutting planes: Gomory: 1 Flow cover: 4 Explored 19 nodes (30333 simplex iterations) in 19.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.122840000000e+05, best bound 1.122840000000e+05, gap 0.0%